WINNER: Leighton Baines is impressed with John Stones' composure and maturity [GETTY]

Stones scored his first Everton goal on Sunday in the impressive 3-0 win over Manchester United.

From the way Stones shrugged off Antonio Valencia and expertly glanced Baines' corner past David de Gea, he looked like a seasoned professional of 15 years.

But this is just the 20-year-old's second full season at the club. The centre-back was plucked from hometown club Barnsley two-and-a-half years ago by David Moyes.

The Scot would have been forgiven for cheering with joy as his final signing for Everton played a big role in the hammering of the club that sacked him after just 10 months in charge.

“His composure for a lad of his age is unbelievable”

Leighton Baines

Not only did Stones score Everton's second, he also kept United's stellar cast of attacking talent at bay, and Baines was keen to praise the imposing centre-back after the final whistle.

"His composure for a lad of his age is unbelievable," he said.

"He is a down-to-earth kid that he just wants to play football, work hard, he doesn't get involved in anything else and when you are around people like that you just want to see them be successful - and that is the road that John is on at the moment."